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07


                                                            INTERNET










                                                                            Learning Objectives
                                                                            •  The Internet
                                                                            •  World Wide Web
                                                                            •  How the Web Works?                           INTERNET
                                                                            •  Using Web Browser
                                                                            •  Using URLs
                                                                             •  Services of Internet


                                 Yesterday, I saw that my elder brother                                                   99
                                reading an article about Internet and its uses. Can you tell me something

                                about the Internet and its uses?

                                 Sure! Today we will learn about the Internet and how we use it for different
                                purposes.

                 The Internet is a computer network that connects hosts and end systems throughout the

                 world. It is different from the traditional telephony network and bears some remarkable
                 resemblance to the postal system. Today, the Internet connects thousands of networks
                 and millions of users around the world. It is a huge, cooperative community with no central

                 ownership.


                  The Internet


                 The seed of the Internet was planted in 1969 when the Advanced  Research  Projects
                 Agency (ARPA) of the United States Department of Defense began connecting computers
                 at  different  universities  and defense contractors.  The  resulting network was  called

                 Advanced Research Projects Agency Network (ARPANET).

                 In the beginning, ARPANET was a large network serving only a handful of users, but it
                 expanded rapidly. Initially, the network included four primary host computers. The Internet

                 acts as a carrier for several different services, each with its own distinct features and
                 purposes. The most commonly used Internet services are the World Wide Web, electronic
                 mail, news, file transfer protocol, chat, instant messaging, online services, and peer-to-peer

                 services.
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